SAN FRANCISCO — Colin Kaepernick found tight end Vernon Davis on a 20-yard completion for the 49ers' first touchdown of the season, giving them a 7-0 lead over the Green Bay Packers on Sunday at Candlestick Park.

Davis, who's 2012 rapport with Kaepernick was questioned as recently as last week by former teammate Randy Moss, raced past safety M.D. Jennings to catch the perfectly thrown pass into the right side of the end zone.

That touchdown pass came on third-and-8, and it was the fourth third-down conversion on the 13-play, 83-yard scoring drive. The earlier conversions: a 9-yard reception by Anquan Boldin, a 2-yard run by Frank Gore and a 3-yard run by Kendall Hunter.

Kaepernick and Davis combined on only two touchdown passes last season: the first came in Kaepernick's first start against Chicago on Nov. 19, and the second was in the NFC Championship win at Atlanta.

Kaepernick was 6-of-9 for 79 yards through the 49ers' first two series.